It is provided a driving device for adjusting a vehicle part, in particular a tailgate, comprises an electric drive for driving the vehicle part, with an output shaft for transmitting an adjusting force to the vehicle part, and a first braking device operatively connected to the output shaft, which includes at least one permanent magnet element and is configured to provide a braking force for arresting the vehicle part in a currently adopted position. There is also provided a second braking device that is configured to switch the electric drive into a generator braking mode in order to at least partly feed a power generatorically produced by the drive back into the drive and thereby provide a braking force for braking a movement of the vehicle part.

A system for assisting a user in moving a device relative to a structure comprises a magnetorheological (MR) fluid actuator unit including at least one torque source and at least one MR fluid clutch apparatus having an input coupled to the at least one torque source to receive torque from the at least one torque source, the MR fluid clutch apparatus controllable to transmit a variable amount of assistance force via an output thereof. An interface is configured for coupling the output of the at least one MR fluid clutch apparatus to the device or surrounding structure. At least one sensor provides information about a movement of the device. A processor unit for controlling the at least one MR fluid clutch apparatus in exerting the variable amount of assistance force as a function of said information, wherein the system is configured for one of the MR fluid actuator unit and the interface to be coupled to the structure, and for the other of the MR fluid actuator unit and the interface to be coupled to the device for the assistance force from the MR fluid actuator unit to assist in moving the device.

An arrangement (16) for controlling movements of an access member (12) relative to a frame (14), the arrangement (16) comprising abase section (18) for connection to either the access member (12) or the frame (14); a fixation part (20) for connection to the other of the access member (12) and the frame (14); a flexible elongated element (22) configured to be tensioned to thereby force the base section (18) and the fixation part (20) to move towards each other in a relative closing movement (86); and a braking device (82) arranged to brake a speed of the relative closing movement (86).

The main door for the control of the access opening to a compartment, particularly a garage compartment, comprises: a fixed portion associable with the access opening of a compartment; a mobile portion including a leaf associated in a mobile way with the fixed portion; at least a pulley on which winds up a cable connected to the leaf and to a counterweight; an operating shaft of the pulley mounted on the fixed portion; a winding-unwinding device having a flexible element which can be wound and unwound which is associated with the top of the leaf; an electric motor mounted on the fixed portion and suitable for placing a driving shaft in rotation; and a transmission and distribution having a first electromagnetic clutch to transmit motion from the driving shaft to the operating shaft and a second electromagnetic clutch to transmit motion from the driving shaft to the winding-unwinding device.

The system for controlling the speed of movement of a sliding door for an aircraft comprises a means for electromagnetically braking the door including a transmission shaft and electromagnetic resistive means. The resistive means are autonomous and include a control law relating a first damping value to a first speed threshold of the speed of movement of the door, a second damping value to a second speed threshold of the speed of movement of the door, the resistive means applying on the transmission shaft the resistive torque equal to a first torque proportional to the first damping value when the speed of movement is higher than the first speed threshold, and applying the resistive torque equal to the sum of the first torque and of a second torque proportional to the second damping value when the speed of movement is higher than the second speed threshold.

A powered actuator includes a leadscrew as an extensible member connected to a closure, such as a vehicle side door and is configured to move linearly for opening or closing the closure. The first powered actuator also includes a gearbox configured apply a force to the extensible member for causing the extensible member to move linearly. An adapter is configured to mount the gearbox to the vehicle body. The adapter allows the powered actuator to replace a non-powered door check device. The adapter also allows some relative rotation between the gearbox and the vehicle body for fitment of the powered actuator. An electromagnetic (EM) brake is coupled to the gearbox on an opposite side from the electric motor. A high-resolution position sensor is coupled to a driven shaft to measure a position of the actuator, the position sensor is spaced apart from the EM brake to prevent electromagnetic interference therefrom.

A sliding door assembly for a refrigerated display case is provided. The sliding door assembly includes a door frame having a top frame segment and a plurality of sliding bearings that slide along channels within the top frame segment. A plurality of display case doors are coupled to the sliding bearings and configured to slide, along with the sliding bearings, between an open position and a closed position. The display case doors may be suspended from the sliding bearings. The sliding door assembly may include an automatic closure system coupled to the display case doors and configured to apply a closing force that automatically returns the display case doors to the closed position. One or more magnets may apply a magnetic damping force as the display case doors approach the closed position to facilitate a soft closure of the display case doors.

An embodiment integrated operating apparatus for different types of gates includes a driving motor, a main shaft rotatable by the driving motor, a first clutch portion at a first side of the main shaft and configured to selectively transmit power to a first gate of a vehicle, the first clutch portion including a first clutch and a first gear selectively engaged with each other, and a second clutch portion at a second side of the main shaft and configured to selectively transmit power to a second gate of the vehicle, the second clutch portion including a second clutch and a second gear selectively engaged with each other, wherein the first and second gates are configured to be independently operated based on the first clutch portion being in an engaged state or a released state and the second clutch portion being in the engaged state or the released state.

A reinforced door assembly for selectively barricading a doorway of a protected room. The reinforced door assembly comprises one or more track assemblies, a door assembly, one or more track wheel assemblies, one or more magnetic receiver assemblies on a stopper assembly, and one or more ferromagnetic plates. The reinforced door assembly is installed on a wall within a protected room, such as a school classroom. The one or more track assemblies is aligned with and partially surrounds the doorway. The door assembly is configured to selectively slide between an open configuration and a closed configuration along the one or more track assemblies. The open configuration comprises the door assembly not blocking the doorway. The closed configuration comprises barricading the doorway with the door assembly. The one or more track assemblies comprises at least an upper track assembly.

A door opening and closing apparatus for a vehicle includes a lead screw hinge-coupled to one of a door or a body of the vehicle; and an opening and closing module coupled to the other thereof, the opening and closing module being arranged such that the lead screw passes through a center of the opening and closing module, and configured to move to a first side of the lead screw to close the door or to a second side of the lead screw to open the door. The opening and closing module includes a drive module configured to provide a rotation that is converted to linear reciprocation of the opening and closing module relative to the lead screw; and a planetary gear reduction module configured to transmit the rotation of the drive module at a preset gear reduction ratio.